| Giver | Post | Date |
| jbbbatiste | Select 5 numbers from the nine numbers, namely 1~9 | 05-Feb-2021 |
| jbbbatiste | If a and b are positive integers, a^2 + b^2=145 | 31-Jan-2021 |
| jbbbatiste | x and n are positive integers, such that 7x = 10^n – 1 | 29-Jan-2021 |
| jbbbatiste | K=1.03^N, N is a positive integer | 29-Jan-2021 |
| jbbbatiste | When positive integer n is divided by 5, the remainder is 2 | 26-Jan-2021 |
| Carcass | Suppose a, b, c, d, e are selected randomly from the set | 23-Nov-2020 |
| madhav001 | If a and b are positive integers, a^2 + b^2=145 | 17-Oct-2020 |
| Carcass | There are 4 fiction books and 6 non-fiction books | 17-Sep-2020 |
| Carcass | When positive integer n is divided by 5, the remainder is 2 | 15-Sep-2020 |
